Electrical insulator.



UNITED srnrns rain: enrich...

DANIEL G. BOLTON, OF CAMDEN, NEW JERSEY; ANNIE O. E. BOLTON, ADMINISTRATRIX OF SAID DANIEL G. BOLTON, DECEASED, ASSIGNOR TO FRANK S. DIENEB, OF

CAMDEN, NEW JERSEY.

To all whom it may concernf Be it known that I, DANIEL G. BOLTON, a citizen of the United States, residing at 123 Penn street, Camden, in the county of Camden and State of New Jersey, have in- Jented certain new and useful Improvements in Electrical insulators, of which the following is a specification.

My inventionrelates to improvements in electrical insulators on which high tension wires may be attached; also an electrical insulator on which low tension wires. as telephoneand telegraph may be attached, thereby attaining a higher insulation. i

The object of the invention is to improve the insulation of the wires and to reduce surface leakage in damp weather whereby a higher standard of insulation can be main tained.

The ditliculties heretofore encountered in insulating a line in damp weather is the. exposure of the line and its tie wire. they being secured externally to the insulator collect dirt and smoke and when the surface becomes moist it will form a. eondru'ting surface that will -ause leakage. in fact. the wire and its tie wire in encircling the insulator might'be divided into small segments. these segments making contact with the conductor coating on the insulator become so many multiple leak units over the surface of the insulator to the pin and pole to the ground or to an adjacent; wire. My invention eliminates these leak units to a marked degree by an internal fastening whereby the wire and its tie wire are not exposed and have practically no contact with a conducting material on the surface of the insulator.

My improved electrical insulator is represented in the accompanying drawings in which Figure 1 is a plan View. Fig. 2 is a vertical cross-section view of Fig. 1 on the line Referring to the drawings in which similar letters denote corresponding parts-r designates a standard poleline pin or attachment. Secured thereto is an inner insula tor on bushing B. C is a larger bushing also of insulating material held in position by collar D.

G represents compoundor cement to complete a solid.

ELECTRICAL INSULATCR.

Specification of Letters Patent. Pgwygntegd E1 12 1-912 Application filed May as,

1910. Serial No. 563,980.

E represents the line wire secured-to B by means of tie wire F.

H is a cap to complete a housing for wire E and itstie wire F as shown in Fig. 2.

C is a U shaped extension of C adapted to hold wire E and its tie Wire F, bothare sealed'in C? with cement G as shown in Figs. 1 and 2.

'lo attach the wire E to the insulator and seal it from moisture. C and D are rst placed over pin A and areallowed to resttemporary at any convenient place that will not conflict in placing insulator B 'on pin A and securing wire E with its tie wire F, inner insulator B is now placed on pin A, being provided with inner threads B to fit the threads on pin A. B- is also provided with a groove B whereby tie wire Fean securely fasten wire E to said insulator B by means of twisting or tieing as shown in FigsJl and Q. The larger bushing or cylinder of insulating material can now be brought up from its temporary resting place below 13 and held in position by screw col lar D, also preferably of insulating material. by means of its inner screw portion D fitting on outer screw portioinPfi. C is preferably constructed with a petticoatas C as a water drip and to extend the surface distance of wire E- to pin A; also to extend the surface distance to its only eie terior or surface contact points as E and E, O is provided with a U shaped extension as shown in Figs. 1 and 9..

Vi ire E having been secured to insulator or compound of high insulating nature and impervious to moisture as shown by G Figs. 1 and 2, is placed between E: and C sealing the wire from outside contact except at the points E and E as previously explained. To complete the solid insulator a cover or cap H is secured to pin A by means of its inner threaded portion H to fit correspondingtlnead on pin A. H is prefer ably of insulating material and overlaps C to form a perfect housing to protect wire E from moisture and from contact with a con ducting substance as dirt or smoke on the surface of the insulator. it will be seen that this method of in;

terior fastening and sealing the wire and'its tie wire will. eliminate multiple surface contacts except at the points E and E thereby improving the insulation of the line many fold. The insulator with its housings would be more eificient than the present exterior fastened insulators even if the cement or compound G was not used: also an efficient insulator could be constructed without the cover or cap H, but the complete insulator as shown and described is more desirable but however I do not wish it limited to the pin method of attaching.

Various slight changes might be made in the general form and arrangement ofparts described without departing from my invention" and hence I do not limit myself to the precise details set forth but consider myself at libertylto make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

What I claim and desire to secure by Let ters Patent is 1. An insulator comprising a bushing of insulating material, a wire attached to the bushing, an outer bushing around the first mentioned bushing, and a cover over said outer bushing. I

2. An insulator comprising a bushing of insulating material, a wire secured thereto, an outer bushing surrounding the first men- 'tioned bushing and spaced therefrom, and

a filling of cement between said bushings and inclosmg the wire. 3. An insulator comprising an inner bushing, a wire secured thereon, an outer bushing surrounding the first mentioned bushing and spaced therefrom, a wire receiving trough integral with said outer bushing, a

wire in said outer trough and cement between said bushings and' insaid trough, inclosing saidwires.

4. An insulator comprising an inner buslr ing, a wire secured thereon, an outer bushing surrounding the first mentioned bushing and spaced therefronna wire receiving trough integral with said outer bushing, a wire in said trough and cement between said bushings and in said trough inclosing said wires, and a cover over both of ,said bushings. g

5. An insulator comprising a bushing of insulating-material, a wire attached to said bushing, and means to seal the wire adjacentto the bushing and the attaching means aforesaid. i

6. An insulator comprising a bushing of insulating material, a wire attached to said bushing, an outer bushing around the first mentioned bushing andspaced therefrom, a filling of cement between said bushings and inclosing the wire, and a cover over said. outer bushing.

7.-An insulator comprising a bushing of insulating material, a wire secured thereto, an outer bushingsurrounding the first mentioned bushing, wire receiving troughs at each side of the outer bushing and extending inline with and having the wire mounted therein, a filling of cement between said bushings and in the troughs aforesaid, and

a cover over both of said bushings.

In testimony whereof I afiix my signature in presence of two witnesses.

' DANIEL Gr. BOLTON.

' Witnesses: I i EDWARD T. HoMAN,

EBERT Bunnouerr. 

